Journal
CHEMICAL PHYSICS LETTERS
Volume 500, Issue 4-6, Pages 277-282Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2010.10.006
Keywords
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Funding
- Second National Program for Research, Development and Innovation [ID_477 / 2007]
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An intriguing case has recently emerged in SERS literature regarding the correct interpretation of SERS fingerprints recorded from p-aminothiophenol molecules adsorbed on metallic surface. In this work we present an original approach to demonstrate the production of p,p'-dimercaptoazobenzene (DMAB) by catalytic coupling reaction of p-aminothiophenol (p-ATP) on the surface of polystyrene spheres decorated with gold nanoparticles. With the aim of disentangling the SERS signals from these two molecular species, our approach combines the correlation analysis of time-dependent intensity fluctuations of some representative SERS bands with their spatial mapping performed by Scanning Confocal Raman Microscopy. (C) 2010 Elsevier B.V. All rights reserved.
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